My Bookmarked Threads My ScrapBook

Home : 2008 : Mar : 18

    Simple machines stations
    By Windy

    Clip to ScrapBook
       
    I do a simple machines stations lab in which they try each of the simple machines.

    Wheel and axle--slide a book across the table. Slide it again but with round pencils under it. Which is easier?

    Pulley--I set up 2 pulleys, one a single and one a double to lift objects. One is easier. You could just set up a pulley on a piece of dowling between 2 chairs. The kids can see if it's easier to lift the object by hand, or does it seem easier with the pulley? I made 1 lb bean bags for this. Pulleys are not too expensive at the hardware store.

    Lever--long stick with weight on the end and a block of wood for the fulcrum. Which way is easier to lift the weight, with the weight and fulcrum close together or far apart?

    Screw--wrap a triangular piece of paper around a pencil to show the screw is just an inclined plane wrapped around a post.

    Inclined plane--got a board and set it up like a ramp. Is it easier to slide the bean bags up the ramp, or lift them up?

    Wedge--bin of sand. Which way is it easier to separate the sand, with a block of wood or a wedge?

    I know this is a whopping lot of work to set up, but you could do just a couple of them to show how simple machines make work easier. The wheel and axle/lever/pulley are similar in that they all have turning points so you could choose one from that group, and another from the screw/inclined plane/wedge group as they are very similar.

    View the original thread this idea was posted on



Visit our ProTeacher Community

For individual use only. Do not copy, reproduce or transmit.
Copyright 1998-2017 ProTeacher
All rights reserved